Abstract
The intradermal test was given to subjects from Medani and Sennar, in the Gezira area of the Sudan; the WHO [World Health Organization] Melcher''s Adult Schistosoma mansoni antigen was used in that survey. Simultaneously urine and stools of the same subjects were examined for S. haematobium and S. mansoni ova. The results show that the intradermal test is valuable in epidemiological surveys.